(3fXQjI GdbQGQGJ GdEOGQj (B: s (3eONd cej aj GdEOGQI (B/ s - (3eTQbj, MSf Ydjs ((3YeGf (B:s (3OGQ GdeSjQI ddfTQ hGdJhRjY hGdWHGYI,s, 1997)
Keywords: (3GdEOGQIs; (3JbfjGJ GdEOGQIs; (3GdbQGQGJ GdEOGQjIs; (3GdbjGOI GdEOGQjIs